Riko Sawayanagi defeated Yuuki Tanaka 6-3 4-6 6-3 in the Mie 10K qualifying round on carpet. The result followed the form book — Riko Sawayanagi came in leading the head-to-head 2–1. Riko Sawayanagi extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-10-12 | Makinohara $25K | QF | grass | Riko Sawayanagi | 6-3 6-1 |
| 2014-11-17 | Toyota 75K | R32 | carpet | Yuuki Tanaka | 7-5 3-6 6-2 |
| 2011-11-21 | Toyota 75K | Q32 | carpet | Riko Sawayanagi | 6-3 6-4 |
Averages over each player's completed matches in the selected window (16 vs 7). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About